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Fair Value Asset Level1 To Level2 Transfer Amount Fair value assets transfer from Level 1 to Level 2 Additional Paid in Capital, Ending Balance Additional Paid in Capital, Beginning Balance Additional Paid in Capital, Total Additional Paid in Capital Additional paid-in capital Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Gains License Revenue [Member] Stockholders' equity: Equity, Attributable to Parent [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Two Thousand And Twenty One Plan [Member] Two thousand and twenty one plan. 2021 Plan [Member] Earnings Per Share [Abstract] Accounting Policies [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Total Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Marketable securities, Accrued interest Earnings Per Share, Basic, Total Earnings Per Share, Basic Net loss per common share - basic Fair value liabilities level2 to level1 transfer amounts. 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Gilead Agreement [Member] Investments, Debt and Equity Securities [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value Per Share, Vested Payment of business combination and pipe financing transaction costs. 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